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WO2018103792A1 - Insert d'outil, outil de moulage ou outil à noyau ainsi que procédé de fabrication de moules ou de noyaux - Google Patents

Insert d'outil, outil de moulage ou outil à noyau ainsi que procédé de fabrication de moules ou de noyaux Download PDF

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Publication number
WO2018103792A1
WO2018103792A1 PCT/DE2017/101039 DE2017101039W WO2018103792A1 WO 2018103792 A1 WO2018103792 A1 WO 2018103792A1 DE 2017101039 W DE2017101039 W DE 2017101039W WO 2018103792 A1 WO2018103792 A1 WO 2018103792A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
mixture
tool
sand
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2017/101039
Other languages
German (de)
English (en)
Inventor
Wolfram Bach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaftan Michael
Original Assignee
Kaftan Michael
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaftan Michael filed Critical Kaftan Michael
Priority to EP17825733.3A priority Critical patent/EP3551359A1/fr
Priority to US16/466,325 priority patent/US20200391279A1/en
Publication of WO2018103792A1 publication Critical patent/WO2018103792A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B22C1/10—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for influencing the hardening tendency of the mould material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/18—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents
    • B22C1/186—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of inorganic agents contaming ammonium or metal silicates, silica sols
    • B22C1/188—Alkali metal silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B22C7/065—Venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/06—Core boxes
    • B22C7/067—Ejector elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening

Definitions

  • the present invention relates to a mold or core tool for the production of molds or cores for foundry purposes using a
  • sintered core box material and a mixture of a molding material and a water-containing inorganic binder.
  • Binder introduced into the mold or core tool and there through
  • Heating cured By using an inorganic binder leakage of environmentally damaging gases when curing the mixture should be avoided.
  • the said patent does not take into account the differences between the electrical resistivity properties of the core tool and the electrically resistive properties of the sand-binder mixture. It uses "mutually isolated parts of the separable mold or core tools".
  • From DE 24 35 886 A1 discloses a method for the production of foundry molds or cores by introducing a mixture of aggregate and binder in a mold or core box and heating the mixture is known, wherein the heating causes by passing a electrical current through the mixture becomes.
  • frame-shaped or box-shaped preferably slightly tapering down, configuration with a circumferential wall and a box-like configuration also has a bottom.
  • Mold or core tools for inorganic processes are primarily made of metal such as e.g. Made of steel or aluminum.
  • Insulation layer Insulation layer.
  • the electric current always seeks the path of least resistance to equalize the electrical potentials.
  • Metallic core tools have a resistance range of, for example, 2x10-7 ohm-meters (steel), with sand-binder mixtures ranging from about 10 1 to 10 2 ohm meters. Since the resistance at the core box is much lower than in the sand binder mixture, the stream flows up to the contact surface within the core box and is then passed through the sand binder mixture for a short distance. This has the consequence that on thicker parts of the
  • the core box material (7) should be made of metal and the Sandbindergemisch (2) fills the cavity of the core box. Between the contact surfaces of the core box is an insulation layer (16).
  • Shell formation Because of the shell formation, the interior of the sand core has not yet completely hardened, this results in a limitation of the maximum sand core thickness, which can be produced with existing methods.
  • the maximum thickness of the sand core depends on the duration of the heating and the weight of the sand core. If the heating is not sufficient, the outer shell of the sand core, despite complete curing, can not fully support the weight and can thus lead to breakage of the sand core.
  • the present invention therefore deals with the problem of providing an improved or at least one alternative embodiment for a method of the generic type which overcomes in particular the disadvantages known from the prior art.
  • the present invention is based on the general idea in selecting the material of the separable forming or core tools
  • Conductivity should be taken into account so that it corresponds to the electrical conductivity of the sand-binder mixture approximately during the optimal working temperature.
  • the electrical conductivity of the molding tool (cavity) is thus determined by the sand-binder mixture used.
  • Special ceramics such as silicon carbide or silicon nitride or aluminum oxide have a higher hardness integral than steel or aluminum.
  • silicon carbide has a better thermal conductivity than steel.
  • Molded material for example. Of sand (foundry sand), and containing water
  • Binder which forms an electrolyte in dissolved form and has sufficient electrical conductivity on.
  • the present invention is further based on the general idea to provide a mold or core tool for producing molds or cores, for example.
  • a mold or core tool for producing molds or cores, for example.
  • G demkern, from a mixture of a molding material and a water-containing binder which forms an electrolyte in dissolved form and a sufficient electrical Having conductivity, the inventive mold or core tool has a consisting of at least two parts, electrically non-conductive, housing.
  • the molding or core tool moreover has at least two electrodes, wherein in each case one electrode is arranged in a part of the housing. Electrical energy is later introduced into the material via the two parallel electrodes and into the mixture via the latter, whereby the mixture is heated and thereby cured.
  • the process requires direct contact of the conductive material and the core box electrodes. Thus, it is possible to dispense with an insulating layer between the core box parts.
  • the introduction of the mixture takes place for each cycle of the sand core production wherein the material is introduced once per production of the forming or core tool.
  • the material thus forms the negative contour of the sand core or the mold to be produced later therein.
  • After the mixture in the Material is embedded, is then fed to the material heat, for example by means of electricity, which leads to a curing of the mixture.
  • the housing merely constitutes a receptacle for holding the conductive material and must not be electrically conductive, since otherwise the current is passed exclusively through the housing and not through the material or the mixture.
  • the housing can be made of plastic and has the advantage that it is comparatively light and therefore easy to handle. Alternatively, an insulating ceramic or other electrically non-conductive material may be used.
  • Parts of the housing are connected to one another via one or more parting planes as in previous patents, the electrodes preferably being arranged parallel to one another or even into a part of the housing
  • the voltage applied to the electrodes can be regulated, for example, increased, so that short cycle times for the curing process can be achieved. Short cycle times in turn allow a comparatively cost-effective production of the molds or cores.
  • the regulation of the power / voltage can be done by means of inverter / power controller or by applying different voltages.
  • the method can also be operated by means of a constant applied voltage.
  • the electrical energy in the form of alternating current or direct current can be applied to the material and sand. Be fed binder mixture. AC is available everywhere and can be regulated almost arbitrarily.
  • steam can be removed from the sand core and the material, the electrodes and the housing by means of core marks (nozzles) via bores.
  • the material may also be porous, thus allowing escape of the gases or water vapor.
  • holes are to be provided in the material for non-conductive ejector pins, which are used to remove the sand cores. These allow the removal of the sand cores after the curing of the mixture and the moving apart of the housing parts.
  • the ejector pins must be made of non-conductive material to avoid a short circuit with the system.
  • Required ejector pins are in the designated ejection holes with the base plate of
  • conductive ejector pins may also be used, as long as it is structurally ensured that they have no contact with a current-conducting material while the current is switched on.
  • Each binder has an optimal working temperature which the
  • the specific resistance curve of the desired inorganic sand-binder mixture has to be determined as a function of the temperature.
  • Table 1 shows exemplary selected resistance temperature values for sand binder mixtures based on inorganic binders and binder variations. Various water glass components and graphite additives were also investigated. The curves were determined as follows:
  • a comparison sample has to be created.
  • the specimen consists of two opposite metallic electrodes and an insulating tube between the electrodes. Geometry (area and distance of the electrodes) of the body inside the insulating tube must be determined.
  • the cavity is filled with a green uncured sand binder mixture.
  • the sand-binder mixture must correspond to the mixture to be used later during production. The mixture must be real
  • Measuring devices connected to determine the voltage, the current and the temperature. A constant voltage is applied to the electrodes via a power supply. The calculated resistance results from the applied voltage divided by the measured current.
  • Rho R * A / I
  • Rho specific electrical resistance of the mixture
  • phase 1 capacitive load
  • the inorganic binder can be replaced by other binder types, provided that they are electrically conductive and require heat for curing and have the other required properties.
  • a material composition Based on the specific resistance of the sand-binder mixture, a material composition must be determined by means of test series, which has a suitable electrical resistivity at a certain level
  • Temperature has. This particular temperature depends on the optimum temperature which the binder needs to cure the best.
  • tested binders required temperatures of about 150 ° C to about 180 ° C to cure.
  • the area around the optimal resistance was determined by means of a temperature-resistance curve (see above) by approx. 25 ohmmeters. Consequently, the tested binder mixture requires a material with a resistivity of about 25 ohm-meters at 150-180 ° C.
  • the specific resistance of the material should be equal to the optimum specific resistance for the sand-binder mixture.
  • the resistivity of the material is above that of the sandbinder mixture, this tends to result in heating from the center of the core toward the core box material since the current finds the path of lesser resistance.
  • the course of the temperature-resistance curve of the material should be similar to the temperature-resistance curve of the sand-binder mixture. The smaller the deviation of both curves, the more effective the process.
  • test series for the determination of the material can be as follows
  • Example Silicon carbide is produced in the form of a small sample plate. This material sample is then clamped in a device between two electrodes, so that these electrodes have a direct contact with the sample plate. Subsequently, the temperature-resistance curve for this sample material is determined.
  • the material composition must be revised.
  • silicon carbide compositions having a variation in graphite content in the ceramic mixture have been found to be positive. But In principle, other material compositions or material additives which influence the electrical resistivity are possible.
  • the graphite part is bound in the ceramic and thus has no influence on further casting processes.
  • the selected material must also be the other physical
  • the ceramic selected for further testing has a specific one
  • the maximum short-term load of the material must be determined at which no permanent damage of the material occurs.
  • This maximum short-term load plays an important role for the electric control in the following. This is determined with stress tests and may be too
  • Adjustment of the electrical resistivity of the selected mixture corresponds and also the other requirements to the foundry enterprise are fulfilled.
  • the structure of the core box can be produced for the application of the method.
  • the most critical step is the production of the material.
  • the ceramic is produced in several production steps according to common ceramic production methods. Especially fine finishing after sintering requires the utmost attention due to the very hard material (Mohs hardness of approx. 9.5). The more accurate the finishing, the lower the later
  • the attachment can be made in the core box.
  • the electrode should be laid floating on the back of the material part. This is necessary because the material of the electrodes usually has a higher thermal expansion than that Core box material. For this purpose, two pins can be fixed in the back of the material, which hold the electrodes in position during the production process.
  • One possible embodiment also provides for introduction of the electrodes into the material. In this case, no pins would be needed for alignment.
  • the electrodes as well as the material will then be taken up by means of a depression in an insulating material.
  • the attachment of the multilayer levels can be done by means of anchoring in the base plate of the tool.
  • For the attachment angle can be used with screw as shown in Figure 5 by way of example.
  • quick-release systems can be used instead of screws.
  • the mounting screws should be made of non-conductive material in order to avoid conduction of current to the housing.
  • the electrodes require a power supply which with the external
  • Switching cabinet is connected and thus allows an electric control.
  • the electric control must be adapted to the core box as well as the procedure.
  • the electric control takes over the task of supplying the core box with sufficient current by means of current guidance and electrodes.
  • the electric control must be planned accordingly.
  • the control of the power supply must take into account the maximum short-term load of the selected material as well as the resistance-temperature curve of the material and the sand-binder mixture.
  • the electric control is to be chosen so that the highest possible power input by means of high voltage, however, the maximum short-term load limit is never exceeded in order to prevent damage to the material and thus to ensure an economical process.
  • the power input and related heat development in the sand-binder mixture is dependent on the resistivity and the applied voltage. Therefore, with regulation of the voltage, the power input and the temperature can be controlled.
  • the core box should have temperature sensors to avoid heating above the prescribed working range of the binder, as too high a temperature would otherwise adversely affect the bonding force.
  • the electric control also regulates the different process steps of the core shooting machine. It must be specially when moving together
  • Core box parts are taken to ensure that the merge happens at an adjusted pace to avoid a shock effect in the core box material and thus a possible permanent damage.
  • For core tools with multiple sand cores can either a
  • Electrode pair can be used per sand core or a pair of electrodes which covers all sand cores of the complete core box. This is too take into account that in the heating process, the control is to be chosen so that all sand cores can harden in the desired cycle time but never the temperature in the sand core rises above the point at which the binders lose their binding force.
  • the regular production process is divided into 3 processes.
  • the first process describes the commissioning of the system after a short or long standstill.
  • a feature during this process is that the material has not yet reached the planned operating temperature.
  • the heating of the core box takes place as well as in the typical production process.
  • the core parts are brought together from their starting position and form a
  • the Sandbindergemisch can be shot into the core box.
  • the energy is supplied by electricity thanks to the electric control. Due to increased specific
  • the process parameters can be described as follows.
  • the material of the core box has the operating temperature and therefore the optimum specific resistance of the sand binder mixture.
  • the core box parts are
  • the core box sections are closed and then the sand-binder mixture is shot into the core box.
  • the specific resistance depends on the temperature of the sand-binder mixture.
  • the mixture can be
  • the direct contact surface to the sand binder mixture of the core box material cools off somewhat.
  • the resistance of the core box material increases in the short term while at the same time the specific resistance of the sand binder mixture falls thanks to the heat absorption. Since the temperature-resistance curves of the material and the sand binder mixture are similar as described above, the deviation of the specific resistance remains limited.
  • the electric control activates the current flow and this leads to a flow of current through the material as well as through the sand core.
  • the resistance of the sand binder mixture decreases as well as in the material until the optimum resistance is almost reached. At this moment the performance entry is optimal.
  • the Sandbindergemisch has now heated from the initial temperature to about 100 to 130 ° C depending on the size within a few seconds. As soon as the free charge carriers are reduced by evaporation of the water content in the Sandbindergemisch, the specific resistance of the Sandbindergemisches to rise. At this moment, the flow of current within the sand core is reduced. In order to achieve the desired optimum operating temperature for the Sandbindergemisch now the remaining heat energy must be transferred via the core box material as well as existing procedures.
  • the silicon carbide material is heated continuously to compensate for the heat loss of the material to the sand core.
  • a particular advantage of the method is therefore particularly in the heating of the Sandbindergemisches by the good thermal conductivity of the material.
  • the further particular advantage of the method is therefore particularly in the heating of the Sandbindergemisches of the temperature at injection up to about 130 ° C by the principle of resistance heating by means of current flow within the sand core.
  • the further advantage is the efficient heating of the material and thus the heat supply in the phase of 130 ° C up to the desired operating temperature of the Sandbindergemisches.
  • a Sandbindergemisch is used with an operating temperature of about 170 ° C and a Einschusstemperatur of about 20 ° C. In total, about 150 ° C are needed for heating. By means of the method can therefore 2/3 (about 100 ° C) of the required heat energy very quickly means
  • Resistance heating can be generated within the sand core and about 1/3 by means of heat transfer of the material to the sand core.
  • the sand core After reaching the operating temperature or curing, the sand core can be removed as in existing core shooting methods.
  • Required ejector pins for ejecting the sand core from the cavity are fastened in the ejection bores provided for this purpose and allow the sand cores to be released from the material.
  • the third process describes the cooling phase before a break or
  • Core tool materials such as steel or aluminum is a very hard material (Mohs thickness 9.5) and thus extends the life of the core box due to less wear.
  • the guidelines of the low voltage of up to 1000 V can be worked by adjusting the specific electrical resistance depending on sand core thickness. This not only gives the process a higher level of security for the employees but also reduces costs. Basically, however, higher voltages are possible as in existing patents. The rule is that the thicker the sand core the higher the tensions should be used.
  • Another advantage results from the fact that no external heating devices are needed. Not only does this increase the efficiency of the process as described above, it also reduces the acquisition and maintenance costs of any external heating devices. In addition, this makes it possible to provide systems with a smaller space requirement so that more equipment can tend to be accommodated on the same area.
  • Core tooling materials such as steel or aluminum are a very hard material (Mohs strength 9.5) and thus extends the life of the core box due to lower wear.
  • Fig. 1 is a sectional view through an inventive mold or
  • Fig. 2 is a phase diagram with a qualitative representation of an introduced electrical power and an associated resistor in one
  • Fig. 3 is a representation of the heating by means of existing electrical
  • FIG. 5 Attachment of the material with insulating housing and base plate
  • FIG. 6 Representation of venting and ejection holes 1, an inventive mold or core tool 1 for the production of molds 2 or cores 2 'for foundry purposes, a machine electrically insulated housing 3, which consists of two parts 4, 5, via a parting plane 6 with each other are connected.
  • the housing is mounted on a base plate 12.
  • the housing 3 is formed of plastic, insulating ceramic or other non-conductive material and receives a conductive material 7.
  • the material 7 forms a mold for receiving a mixture 9, from which, after hardening, the core 2 'or the mold 2 is formed.
  • the material 7 may be, for example, a ceramic material.
  • the specific electrical conductivity of the mixture 9 and the specific electrical conductivity of the material 7 are at least approximately the same size, differ, for example, not more than in phase 2 of FIG. 2, so that in
  • the inventive molding or core tool 1 moreover has at least two electrodes 10 which are arranged parallel to one another.
  • a device 8 for regulating or controlling the voltage supplied to the electrodes 10.
  • the specific electrical conductivity of the material 7 of the core 2 'or the mold 2 now approximately corresponds to the specific electrical conductivity of the mixture 9 in phase 2 of FIG. 2, whereby a comparatively uniform passage of electrical energy through the mixture 9 is possible.
  • the mold or core tool 1 according to the invention can be used to produce a mold 2 or a core 2 'or a casting core 2' at the highest quality level, since, owing to the at least almost identical electrical conductivity the mixture 9 and the material 7 used for the mold 2 or the core 2 'can be uniformly passed through electrical current through the material 7 and the mixture 9 and thus uniform heating and curing of the mixture 9, regardless of the respective
  • the mold 2 or the core 2 ' is produced as follows: First, after the material selection mentioned during the first construction, the electrically conductive material 7 is introduced into the housing 3 of the forming or core tool 1 and forms a negative mold for the subsequent mold 2 or Subsequently, the material 7 via the electrodes 10 electrical energy and thus heat is supplied to the material 7, which lead to a curing of the mixture 9. A hardening of the mixture 9 is effected in particular by evaporation of water from the mixture 9, wherein the mixture 9 may for example contain an inorganic binder, water and foundry sand.
  • the inorganic binder used in the mixture 9 may be water-soluble, but at least contain water and is in any case electrically conductive.
  • the voltage can be increased or decreased by the device 8, as a result of which a cycle time for producing the mold 2 or the core 2 'can be controlled.
  • the base plate of the tool (12) receives the housing (3) or the parts (4,5) and the material (7) and insulating screws (13) and angle (14) provide for attachment. Insulating screws (13) can also by
  • Alignment bolt (15) held in position.
  • Table 1 shows several series of measurements with different sand binder mixtures. The finding is that the specific electrical conductivity thereby depends on the desired sand-binder mixture and can be influenced by variation of additives and / or by changing the percentages. The stronger the electrically conductive component in the sand binder mixture, the lower the specific electrical resistance in the sand binder mixture.
  • Sandbinder mixture is not yet defined.
  • the electrically specific Property of the Sandbindergemisches targeted to influence the efficiency of the process to improve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

La présente invention concerne la sélection de matériaux pour un procédé de fabrication de moules (2) ou de noyaux (2') pour la fonderie. Lors de la sélection du matériau de la boîte à noyau, à la place des métaux tels que l'acier ou l'aluminium, de préférence une céramique spéciale telle que par exemple carbure de silicium ou nitrure de silicium sont utilisés. L'invention est caractérisée en ce qu'un matériau (7) est introduit dans un boîtier (3) pour recevoir un mélange (9), le matériau comportant du carbure de silicium ou du nitrure de silicium ; en ce que de l'énergie électrique est fournie au matériau (7), par l'intermédiaire d'électrodes (10) disposées dans/sur le boîtier (3) et de la chaleur est fournie au matériau, ce qui permet d'obtenir un durcissement du mélange (9). On obtient ainsi, en raison d'une faible usure abrasive, une plus longue durée de vie des boîtes à noyau.
PCT/DE2017/101039 2016-12-06 2017-12-02 Insert d'outil, outil de moulage ou outil à noyau ainsi que procédé de fabrication de moules ou de noyaux Ceased WO2018103792A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17825733.3A EP3551359A1 (fr) 2016-12-06 2017-12-02 Insert d'outil, outil de moulage ou outil à noyau ainsi que procédé de fabrication de moules ou de noyaux
US16/466,325 US20200391279A1 (en) 2016-12-06 2017-12-02 Tool insert, mould tool or core tool and method for producing moulds or cores

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016224183 2016-12-06
DE102016224183.4 2016-12-06
DE102017217096.4A DE102017217096B3 (de) 2016-12-06 2017-09-26 Werkzeugeinsatz, Form- oder Kernwerkzeug sowie Verfahren zur Herstellung von Formen oder Kernen
DE102017217096.4 2017-09-26

Publications (1)

Publication Number Publication Date
WO2018103792A1 true WO2018103792A1 (fr) 2018-06-14

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PCT/DE2017/100995 Ceased WO2018103784A1 (fr) 2016-12-06 2017-11-20 Procédé et outil de moulage ou outil à noyau destinés à fabriquer des moules ou des noyaux
PCT/DE2017/101039 Ceased WO2018103792A1 (fr) 2016-12-06 2017-12-02 Insert d'outil, outil de moulage ou outil à noyau ainsi que procédé de fabrication de moules ou de noyaux

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Country Status (6)

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US (2) US10967420B2 (fr)
EP (2) EP3551358B1 (fr)
JP (1) JP2019536638A (fr)
CN (1) CN110248747B (fr)
DE (2) DE102017217096B3 (fr)
WO (2) WO2018103784A1 (fr)

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DE202018106268U1 (de) 2018-11-04 2018-11-28 Wolfram Bach Werkzeug zur Herstellung von Formen oder Kernen durch elektrische Widerstandserwärmung eines kunststoffbasierten Materials
DE102018128605B4 (de) * 2018-11-14 2020-07-30 Meissner Ag Modell- Und Werkzeugfabrik Gusswerkzeug, beispielsweise Kernschießwerkzeug oder Kokille, und ein entsprechendes Gießverfahren
DE102019113008A1 (de) 2019-05-16 2020-11-19 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verwendung eines partikulären Materials umfassend ein teilchenförmiges synthetisches amorphes Siliciumdioxid als Additiv für eine Formstoffmischung, entsprechende Verfahren, Mischungen und Kits
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US20200391279A1 (en) 2020-12-17
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US20200188988A1 (en) 2020-06-18
DE102017217096B3 (de) 2018-03-22
DE102017217098B3 (de) 2018-04-05
JP2019536638A (ja) 2019-12-19
US10967420B2 (en) 2021-04-06
WO2018103784A1 (fr) 2018-06-14
EP3551358B1 (fr) 2021-01-13
CN110248747A (zh) 2019-09-17

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